<template>
  <header class="header">
    <h1>todos</h1>
    <input id="toggle-all" class="toggle-all" type="checkbox" v-model="isAll"/>
    <label for="toggle-all"></label>
    <input
      class="new-todo"
      placeholder="输入任务名称-回车确认"
      autofocus
      v-model.trim="content"
      @keyup.enter="addFn"
    />
  </header>
</template>

<script>
import { mapMutations, mapState } from 'vuex';
export default {
  data() {
    return {
      content: "",
    };
  },
	methods:{
		...mapMutations("todos",['add','changeIsAll']),
		addFn(){
			if(this.content.length===0){
				return alert('请输入内容')
			}
			this.add(this.content)
			this.content=''
		}
	},
	computed:{
		...mapState("todos",['list']),
		isAll:{
		get(){
				return this.list.every(item=>item.isDone)
		},
		set(val){
			this.changeIsAll(val)
		}
}
	}
};
</script>
